The problem is an incompatible change in the Ruby Runtime plugin (https://wiki.jenkins-ci.org/display/JENKINS/Ruby+Runtime+Plugin). You also need to downgrade that plugin.

Thanks daspilker, i missed this one.
Ay idea why in the repository linked in https://wiki.jenkins-ci.org/display/JENKINS/Ruby+Runtime+Plugin the last release is 0.10?

No, according to Artifactory version 0.13 has been uploaded by user eitoball. Maybe he has an idea.
See https://repo.jenkins-ci.org/webapp/#/artifacts/browse/tree/General/releases/org/jenkins-ci/plugins/ruby-runtime/0.13/ruby-runtime-0.13.hpi

to sum this up - i was able to make work again downgrading ruby-runtime-plugin to 0.12 and RVM to 0.4

burdandrei Could you explain how to reproduce this error?

As far as I know, changes in ruby-runtime 0.13 is updating jruby version. I didn't think that the changes made incompatibility...

Hi eitoball,
I managed to reproduce it by installing fresh jenkins 2.7.2 rvm and job-dsl plugin.
then add the following:

freeStyleJob('rvmdslwrappers') {
  wrappers {
    timestamps()
    colorizeOutput()
    buildUserVars()
    rvm('ruby-2@project')

  }
}

Genarated job will not have any wrappers, but if you list the XML - they are there.

I submitted https://github.com/jenkinsci/job-dsl-plugin/pull/901 This PR should fix partially. You can use rvm-plugin 0.6, but need to use ruby-runtime 0.12 (0.13 is the latest).

Thanks eitoball, the change you made to DSL i tried locally, but it didn't helped me because of the lack of jruby part.
Thanks for handeling it for both sides, let's try to sync their releases now =)
BTW, Why Ruby runtime plugin is not in github?

> BTW, Why Ruby runtime plugin is not in github?

burdandrei It is https://github.com/jenkinsci/jenkins.rb , under java-runtime. I know that it is confusing... I dunno why.

This problem does not only apply to Job DSL, but for all users updating from ruby-runtime 0.12 to 0.13.

To reproduce, install rvm-plugin 0.6 and ruby-runtime 0.12. Then create a test job and mark the "Run the build in a RVM-managed environment" checkbox. Now update to ruby-runtime 0.13 and open the test job config. The checkbox is not checked anymore. I would prefer to get this fixed in ruby-runtime so that all users will profit from the fix.

I will not merge PR #897 because it will break compatibility for users who are still running ruby-runtime 0.12 or older.

Code changed in jenkins
User: Daniel Spilker
Path:
docs/Home.md
docs/Migration.md
job-dsl-core/src/main/groovy/javaposse/jobdsl/dsl/helpers/wrapper/WrapperContext.groovy
job-dsl-core/src/test/groovy/javaposse/jobdsl/dsl/helpers/wrapper/WrapperContextSpec.groovy
http://jenkins-ci.org/commit/job-dsl-plugin/8dc6921a7840e80184602bf2c7fe0d2be8198c40
Log:
fixed compatibility with Ruby Runtime Plugin

[FIXED JENKINS-37422]

Code changed in jenkins
User: Daniel Spilker
Path:
docs/Home.md
docs/Migration.md
job-dsl-api-viewer/src/assets/javascripts/App.js
job-dsl-api-viewer/src/assets/javascripts/Dsl.js
job-dsl-api-viewer/src/assets/javascripts/Settings.js
job-dsl-api-viewer/src/assets/javascripts/templates/detail.hbs
job-dsl-api-viewer/src/assets/javascripts/views/HomeView.js
job-dsl-api-viewer/src/assets/javascripts/views/TreeView.js
job-dsl-api-viewer/src/assets/stylesheets/main.less
job-dsl-core/src/ast/groovy/javaposse/jobdsl/dsl/transform/PluginASTTransformation.groovy
job-dsl-core/src/main/groovy/javaposse/jobdsl/dsl/RequiresPlugins.java
job-dsl-core/src/main/groovy/javaposse/jobdsl/dsl/doc/ApiDocGenerator.groovy
job-dsl-core/src/main/groovy/javaposse/jobdsl/dsl/helpers/wrapper/WrapperContext.groovy
job-dsl-core/src/test/groovy/javaposse/jobdsl/dsl/PluginASTTransformationSpec.groovy
job-dsl-core/src/test/groovy/javaposse/jobdsl/dsl/helpers/wrapper/WrapperContextSpec.groovy
http://jenkins-ci.org/commit/job-dsl-plugin/b7d9b8084580b74363e50df9bbfb5dc2f4ca3f3e
Log:
Merge pull request #906 from daspilker/JENKINS-37422

JENKINS-37422 fixed compatibility with Ruby Runtime Plugin

Compare: https://github.com/jenkinsci/job-dsl-plugin/compare/496b7eb078c7...b7d9b8084580

ruby-runtime 0.13 seems to be broken, any ruby-runtime based config does not survive a restart.

It took a long time to figure out why I kept losing my configuration. After downgrading to 0.12 it worked again.

This should work now with ruby-runtime 0.12 and job-dsl 1.57. ruby-runtime 0.13 is no longer available in the Update Center.